Christian Kray

ORCID

Publication Activity (10 Years)

Years Active: 1999-2024
Publications (10 Years): 45

Top Venues

AGILE Conf.

J. Locat. Based Serv.

MobileHCI

EICS

Saarland University, Saarbrücken, Germany (PHD)

Education History

Saarland University, Saarbrücken, Germany

PHD

Publications

Benjamin Karic, Jan Stenkamp, Michael Brüggemann, Simon Schröder, Christian Kray, Judith Verstegen
Collecting Data in an Immersive Video Environment to Set up an Agent-Based Model of Pedestrians' Compliance with COVID-Related Interventions. J. Artif. Soc. Soc. Simul. 27 (2) (2024)
Simge Özdal-Oktay, Sven Heitmann, Christian Kray
Linking location privacy, digital sovereignty and location-based services: a meta review. J. Locat. Based Serv. 18 (1) (2024)
Jan Stenkamp, Benjamin Karic, Paula Scharf, Judith Anne Verstegen, Christian Kray
Using an Immersive Video Environment to Assess Pedestrians' Compliance With COVID Distance Keeping Interventions. Interact. Comput. 35 (5) (2023)
Eftychia Koukouraki, Christian Kray
Map Reproducibility in Geoscientific Publications: An Exploratory Study. GIScience (2023)
Noko Kuratomo, Benjamin Karic, Christian Kray
Design and Effect of Guiding Sound for Pedestrians While Maintaining the Streetscape Perception. SUI (2023)
René Unrau, Aditya Kudekar, Christian Kray
Interaction pattern analysis for WebGIS usability evaluation. Trans. GIS 26 (8) (2022)
Jerome Dreyer, Sven Heitmann, Felix Erdmann, Gernot Bauer, Christian Kray
'Informed' consent in popular location based services and digital sovereignty. J. Locat. Based Serv. 16 (4) (2022)
Lucas Braun, Auriol Degbelo, Christian Kray
Geofreebie: a location-based freecycling app to support forced migrant resettlement. J. Locat. Based Serv. 15 (1) (2021)
Lucas Braun, Auriol Degbelo, Christian Kray
Geofreebie: A Location-Based Freecycling App to Support Forced Migrant Resettlement. CoRR (2021)
René Unrau, Christian Kray
Enhancing Usability Evaluation of Web-Based Geographic Information Systems (WebGIS) with Visual Analytics. GIScience (I) (2021)
Guiying Du, Christian Kray, Auriol Degbelo
Interactive Immersive Public Displays as Facilitators for Deeper Participation in Urban Planning. Int. J. Hum. Comput. Interact. 36 (1) (2020)
Samuel Navas Medrano, Max Pfeiffer, Christian Kray
Remote Deictic Communication: Simulating Deictic Pointing Gestures across Distances Using Electro Muscle Stimulation. Int. J. Hum. Comput. Interact. 36 (19) (2020)
Matthias Seuter, Alexandra Pollock, Gernot Bauer, Christian Kray
Recognizing Running Movement Changes with Quaternions on a Sports Watch. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 4 (4) (2020)
Markus Konkol, Christian Kray, Max Pfeiffer
Computational reproducibility in geoscientific papers: Insights from a series of studies with geoscientists and a reproduction study. Int. J. Geogr. Inf. Sci. 33 (2) (2019)
René Unrau, Christian Kray
Usability evaluation for geographic information systems: a systematic literature review. Int. J. Geogr. Inf. Sci. 33 (4) (2019)
Christian Kray, Auriol Degbelo
Map plasticity. CoRR (2019)
Guiying Du, Auriol Degbelo, Christian Kray
User-Generated Gestures for Voting and Commenting on Immersive Displays in Urban Planning. Multimodal Technol. Interact. 3 (2) (2019)
Markus Konkol, Christian Kray, Jan Suleiman
Creating Interactive Scientific Publications using Bindings. Proc. ACM Hum. Comput. Interact. 3 (EICS) (2019)
Christian Kray, Edzer J. Pebesma, Markus Konkol, Daniel Nüst
Reproducible Research in Geoinformatics: Concepts, Challenges and Benefits (Vision Paper). COSIT (2019)
Champika Manel Ranasinghe, Nicholas Schiestel, Christian Kray
Visualising Location Uncertainty to Support Navigation under Degraded GPS Signals: a Comparison Study. MobileHCI (2019)
Champika Manel Ranasinghe, Max Pfeiffer, Sven Heitmann, Christian Kray
Evaluating User Experience under Location Quality Variations: A Framework for in-the-wild Studies. MobileHCI (2019)
Matthias Seuter, Eduardo Rodriguez Macrillante, Gernot Bauer, Christian Kray
Running with drones: desired services and control gestures. OZCHI (2018)
Mehrnaz Ataei, Auriol Degbelo, Christian Kray
Privacy theory in practice: designing a user interface for managing location privacy on mobile devices. J. Locat. Based Serv. 12 (3-4) (2018)
Ana Maria Bustamante Duarte, Auriol Degbelo, Christian Kray
Exploring Forced Migrants (Re)settlement & the Role of Digital Services. ECSCW Exploratory Papers (2018)
Champika Manel Ranasinghe, Jakub Krukar, Christian Kray
Visualizing Location Uncertainty on Mobile Devices: Cross-Cultural Differences in Perceptions and Preferences. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 2 (1) (2018)
Guiying Du, Auriol Degbelo, Christian Kray, Marco Painho
Gestural interaction with 3D objects shown on public displays: an elicitation study. IxD&A 38 (2018)
Champika Manel Ranasinghe, Sven Heitmann, Albert Hamzin, Max Pfeiffer, Christian Kray
Pedestrian navigation and GPS deteriorations: user behavior and adaptation strategies. OZCHI (2018)
Mehrnaz Ataei, Auriol Degbelo, Christian Kray, Vítor Santos
Complying with Privacy Legislation: From Legal Text to Implementation of Privacy-Aware Location-Based Services. ISPRS Int. J. Geo Inf. 7 (11) (2018)
Ana Maria Bustamante Duarte, Nina Brendel, Auriol Degbelo, Christian Kray
Participatory Design and Participatory Research: An HCI Case Study with Young Forced Migrants. ACM Trans. Comput. Hum. Interact. 25 (1) (2018)
Champika Manel Ranasinghe, Christian Kray
Location Information Quality: A Review. Sensors 18 (11) (2018)
Auriol Degbelo, Christian Kray
Intelligent geovisualizations for open government data (vision paper). SIGSPATIAL/GIS (2018)
Guiying Du, Auriol Degbelo, Christian Kray
Public displays for public participation in urban settings: a survey. PerDis (2017)
Daniel Nüst, Markus Konkol, Edzer J. Pebesma, Christian Kray, Marc Schutzeichel, Holger Przibytzin, Jörg Lorenz
Opening the Publication Process with Executable Research Compendia. D Lib Mag. 23 (1/2) (2017)
René Unrau, Morin Ostkamp, Christian Kray
An approach for harvesting, visualizing, and analyzing WebGIS sessions to identify usability issues. EICS (2017)
Markus Konkol, Christian Kray, Morin Ostkamp
Follow the Signs - Countering Disengagement from the Real World During City Exploration. AGILE Conf. (2017)
Samuel Navas Medrano, Max Pfeiffer, Christian Kray
Enabling remote deictic communication with mobile devices: an elicitation study. MobileHCI (2017)
Holger Fritze, Auriol Degbelo, Tobias Brüggentisch, Christian Kray
Feature-centric ranking algorithms for georeferenced video search. SIGSPATIAL/GIS (2017)
Matthias Seuter, Max Pfeiffer, Gernot Bauer, Karen Zentgraf, Christian Kray
Running with Technology: Evaluating the Impact of Interacting with Wearable Devices on Running Movement. Proc. ACM Interact. Mob. Wearable Ubiquitous Technol. 1 (3) (2017)
Christian Kray, Falko Schmid, Holger Fritze
Guest editorial: map interaction. GeoInformatica 21 (3) (2017)
Christian Kray, May Yuan
COSIT 2017 Short Papers - Introduction. COSIT (Workshops/Posters) (2017)
Auriol Degbelo, Carlos Granell, Sergio Trilles, Devanjan Bhattacharya, Sven Casteleyn, Christian Kray
Opening up Smart Cities: Citizen-Centric Challenges and Opportunities from GIScience. ISPRS Int. J. Geo Inf. 5 (2) (2016)
Mehrnaz Ataei, Christian Kray
Ephemerality Is the New Black: A Novel Perspective on Location Data Management and Location Privacy in LBS. LBS (2016)
Thore Fechner, Christian Kray
Presenting Citizen Engagement Opportunities Online: The Relevancy of Spatial Visualization. AGILE Conf. (2016)
Champika Manel Ranasinghe, Christian Kray
Visualizing Location Uncertainty on Mobile Devices: Assessing Users' Perception and Preferences. AGILE Conf. (2016)
Thore Fechner, Dominik Schlarmann, Christian Kray
Facilitating citizen engagement in situ: assessing the impact of pro-active geofenced notifications. MobileHCI (2016)
Morin Ostkamp, Sven Heitmann, Christian Kray
Short-range optical interaction between smartphones and public displays. PerDis (2015)
Holger Fritze, Christian Kray
Community and Governmental Responses to an Urban Flash Flood. ISCRAM (2015)
Morin Ostkamp, Christian Kray, Gernot Bauer
Towards a privacy threat model for public displays. EICS (2015)
Roberta Martella, Christian Kray, Eliseo Clementini
A Gamification Framework for Volunteered Geographic Information. AGILE Conf. (2015)
Thore Fechner, Dennis Wilhelm, Christian Kray
Ethermap: Real-time Collaborative Map Editing. CHI (2015)
Christian Kray, Dennis Wilhelm, Thore Fechner, Morin Ostkamp
Natural Interaction with Video Environments Using Gestures and a Mirror Image Avatar. INTERACT (2) (2015)
Darren Flynn, Daniel J. Nesbitt, Gary A. Ford, Peter McMeekin, Helen Rodgers, Christopher Price, Christian Kray, Richard G. Thomson
Development of a computerised decision aid for thrombolysis in acute stroke care. BMC Medical Informatics Decis. Mak. 15 (2015)
Falko Schmid, Christian Kray, Holger Fritze
MapInteract 2014 Workshop Report the 2nd ACM SIGSPATIAL International Workshop on Interacting with Maps Dallas, Texas, USA - November 4, 2014. ACM SIGSPATIAL Special 7 (2) (2015)
Falko Schmid, Christian Kray
Highlights from MAPINTERACT 2013: the 1st ACM SIGSPATIAL Workshop on Interacting with Maps: held in conjunction with the 21st ACM SIGSPATIAL International Conference on Advances in Geographic Information Systems (Orlando, Florida, November 5, 2013). ACM SIGSPATIAL Special 6 (1) (2014)
Ioannis Delikostidis, Holger Fritze, Thore Fechner, Christian Kray
Bridging the Gap Between Field- and Lab-Based User Studies for Location-Based Services. LBS (2014)
Norman Langner, Christian Kray
Assessing the Impact of Dynamic Public Signage on Mass Evacuation. PerDis (2014)
Morin Ostkamp, Christian Kray
Supporting design, prototyping, and evaluation of public display systems. EICS (2014)
Morin Ostkamp, Jonas Hülsermann, Christian Kray, Gernot Bauer
Using mobile devices to enable visual multiplexing on public displays: three approaches compared. MUM (2013)
Christian Kray, Holger Fritze, Thore Fechner, Angela Schwering, Rui Li, Vanessa Joy A. Anacta
Transitional Spaces: Between Indoor and Outdoor Spaces. COSIT (2013)
Ioannis Delikostidis, Thore Fechner, Holger Fritze, Ahmed Mahmoud AbdelMouty, Christian Kray
Evaluating Mobile Applications in Virtual Environments: A Survey. Int. J. Mob. Hum. Comput. Interact. 5 (4) (2013)
Thore Fechner, Christian Kray
Attacking location privacy: exploring human strategies. UbiComp (2012)
Fathi Hamhoum, Christian Kray
Supporting pilgrims in navigating densely crowded religious sites. Pers. Ubiquitous Comput. 16 (8) (2012)
Morin Ostkamp, Gernot Bauer, Christian Kray
Visual highlighting on public displays. PerDis (2012)
Fathi Hamhoum, Christian Kray
Scalable Navigation Support for Crowds: Personalized Guidance via Augmented Signage. COSIT (2011)
Christian Kray, Daniel J. Nesbitt, John Dawson, Michael Rohs
User-defined gestures for connecting mobile phones, public displays, and tabletops. Mobile HCI (2010)
Tanja Döring, Bastian Pfleging, Christian Kray, Albrecht Schmidt
Design by physical composition for complex tangible user interfaces. CHI Extended Abstracts (2010)
Caroline Snowdon, Christian Kray
Exploring the use of landmarks for mobile navigation support in natural environments. Mobile HCI (2009)
Hans Gellersen, Carl Fischer, Dominique Guinard, Roswitha Gostner, Gerd Kortuem, Christian Kray, Enrico Rukzio, Sara Streng
Supporting device discovery and spontaneous interaction with spatial references. Pers. Ubiquitous Comput. 13 (4) (2009)
Christian Kray, Michael Rohs, Jonathan Hook, Sven G. Kratz
Bridging the gap between the Kodak and the Flickr generations: A novel interaction technique for collocated photo sharing. Int. J. Hum. Comput. Stud. 67 (12) (2009)
Jörg Müller, Marc Jentsch, Christian Kray, Antonio Krüger
Exploring factors that influence the combined use of mobile devices and public displays for pedestrian navigation. NordiCHI (2008)
Christian Kray, Michael Rohs, Jonathan Hook, Sven G. Kratz
Group coordination and negotiation through spatial proximity regions around mobile devices on augmented tabletops. Tabletop (2008)
Kay Connelly, Katie A. Siek, Ingrid Mulder, Steve Neely, Graeme Stevenson, Christian Kray
Evaluating Pervasive and Ubiquitous Systems. IEEE Pervasive Comput. 7 (3) (2008)
Christian Kray, Keith Cheverst, Michael D. Harrison, Fathi Hamhoum, Jürgen Wagner
Towards a location model for indoor navigation support through public displays and mobile devices. MIRW (2008)
Michael D. Harrison, Christian Kray, José Creissac Campos
Exploring an Option Space to Engineer a Ubiquitous Computing System. Electron. Notes Theor. Comput. Sci. 208 (2008)
Christian Kray, Lars Bo Larsen, Patrick Olivier, Margit Biemans, Arthur H. van Bunningen, Mirko Fetter, Tim Jay, Vassilis-Javed Khan, Gerhard Leitner, Ingrid Mulder, Jörg Müller, Thomas Plötz, Irene Lopez de Vallejo
Evaluating Ubiquitous Systems with Users (Workshop Summary). AmI Workshops (2007)
Michael D. Harrison, Christian Kray, Zhiyu Sun, Huqiu Zhang
Factoring User Experience into the Design of Ambient and Mobile Systems. EHCI/DS-VIS (2007)
Christian Kray, Gerd Kortuem
Adaptive Positioning for Ambient Systems. Künstliche Intell. 21 (4) (2007)
Pushpendra Singh, Hai Nam Ha, Zhiwen Kuang, Patrick Olivier, Christian Kray, Phil T. Blythe, Phil James
Immersive video as a rapid prototyping and evaluation tool for mobile and ambient applications. Mobile HCI (2006)
Patrick Olivier, Stephen W. Gilroy, Han Cao, Daniel Jackson, Christian Kray
Crossmodal Attention in Public-Private Displays. ICPS (2006)
Andreas Butz, Christian Kray, Antonio Krüger, Carsten Schwesig
Workshop W2: multi-user and ubiquitous user interfaces (MU3I 2006). IUI (2006)
Christian Kray, Keith Cheverst, Dan Fitton, Corina Sas, John Patterson, Mark Rouncefield, Christoph Stahl
Sharing control of dispersed situated displays between nand residential users. Mobile HCI (2006)
Christian Kray, Gerd Kortuem, Antonio Krüger
Adaptive navigation support with public displays. IUI (2005)
Keith Cheverst, Alan J. Dix, Dan Fitton, Christian Kray, Mark Rouncefield, George Saslis-Lagoudakis, Jennifer G. Sheridan
Exploring Mobile Phone Interaction with Situated Displays. PERMID (2005)
Keith Cheverst, Alan J. Dix, Daniel Fitton, Christian Kray, Mark Rouncefield, Corina Sas, George Saslis-Lagoudakis, Jennifer G. Sheridan
Exploring bluetooth based mobile phone interaction with the hermes photo display. Mobile HCI (2005)
Mike Hazas, Christian Kray, Hans-Werner Gellersen, Henoc Agbota, Gerd Kortuem, Albert Krohn
A relative positioning system for co-located mobile devices. MobiSys (2005)
Christian Kray, Jörg Baus
AIMS 2005: artificial intelligence in mobile systems. Mobile HCI (2005)
Daniel Fitton, Keith Cheverst, Christian Kray, Alan J. Dix, Mark Rouncefield, George Saslis-Lagoudakis
Rapid prototyping and user-centered design of interactive display-based systems. IEEE Pervasive Comput. 4 (4) (2005)
Christian Kray, Andreas Butz, Antonio Krüger, Albrecht Schmidt, Helmut Prendinger
Multi-user and ubiquitous user interfaces: (MU3I 2005). IUI (2005)
Gerd Kortuem, Christian Kray, Hans-Werner Gellersen
Sensing and visualizing spatial relations of mobile devices. UIST (2005)
Keith Cheverst, Hee Byun, Dan Fitton, Corina Sas, Christian Kray, Nicolas Villar
Exploring Issues of User Model Transparency and Proactive Behaviour in an Office Environment Control System. User Model. User Adapt. Interact. 15 (3-4) (2005)
Martin Strohbach, Gerd Kortuem, Hans-Werner Gellersen, Christian Kray
Using Cooperative Artefacts as Basis for Activity Recognition. EUSAI (2004)
Andreas Butz, Antonio Krüger, Christian Kray, Albrecht Schmidt
Workshop W5: multi-user and ubiquitous user interfaces (MU3I). IUI (2004)
Christian Kray, Gerd Kortuem
Interactive Positioning Based on Object Visibility. Mobile HCI (2004)
Martin Strohbach, Hans-Werner Gellersen, Gerd Kortuem, Christian Kray
Cooperative Artefacts: Assessing Real World Situations with Embedded Technology. UbiComp (2004)
Christian Kray, Christian Elting, Katri Laakso, Volker Coors
Presenting route instructions on mobile devices. IUI (2003)
Katri Laakso, Christian Kray
TellMaris and deep map: two navigational assistants. IUI (2003)
Christian Kray, Antonio Krüger, Christoph Endres
Some Issues on Presentations in Intelligent Environments. EUSAI (2003)
Michael Schillo, Christian Kray, Klaus Fischer
The eager bidder problem: a fundamental problem of DAI and selected solutions. AAMAS (2002)
Jörg Baus, Christian Kray
Frames of Reference, Positional Information and Navigational Assistance. FLAIRS Conference (2002)
Yun Ding, Rainer Malaka, Christian Kray, Michael Schillo
RAJA: a resource-adaptive Java agent infrastructure. Agents (2001)

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Publication Activity (10 Years)

Top Topics

Top Venues

Christian Kray